kicad/common/incremental_text_ctrl.cpp

185 lines
4.7 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015 Jean-Pierre Charras, jean-pierre.charras at wanadoo.fr
* Copyright (C) 1992-2016 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <incremental_text_ctrl.h>
/**
* Check that a string looks like a floating point number that can
* be dealt with.
*/
static bool validateFloatField( const wxString& aStr )
{
// Skip empty fields
if( aStr.size() == 0 )
return false;
// a single . or , doesn't count as number, although valid in a float
if( aStr.size() == 1 )
{
if( (aStr.compare( "." ) == 0) ||
(aStr.compare( "," ) == 0) )
return false;
}
return true;
}
INCREMENTAL_TEXT_CTRL::INCREMENTAL_TEXT_CTRL() :
m_minVal( 0.0 ),
m_maxVal( 1.0 ),
m_currentValue( 0.0 ),
m_precision( 4 )
{}
void INCREMENTAL_TEXT_CTRL::SetStep( double aMin, double aMax,
STEP_FUNCTION aStepFunc )
{
wxASSERT( aMin <= aMax );
m_minVal = std::min( aMin, aMax );
m_maxVal = std::max( aMin, aMax );
m_stepFunc = aStepFunc;
// finally, clamp the current value and re-display
updateTextValue();
}
void INCREMENTAL_TEXT_CTRL::updateTextValue()
{
if( m_currentValue > m_maxVal )
m_currentValue = m_maxVal;
if( m_currentValue < m_minVal )
m_currentValue = m_minVal;
wxString fmt = wxString::Format( "%%.%df", m_precision );
setTextCtrl( wxString::Format( fmt, m_currentValue ) );
}
void INCREMENTAL_TEXT_CTRL::incrementCtrlBy( double aInc )
{
const wxString txt = getCtrlText();
if( !validateFloatField( txt ) )
return;
txt.ToDouble( &m_currentValue );
m_currentValue += aInc;
updateTextValue();
}
void INCREMENTAL_TEXT_CTRL::incrementCtrl( bool aUp )
{
incrementCtrlBy( m_stepFunc( aUp, m_currentValue ) );
}
void INCREMENTAL_TEXT_CTRL::SetPrecision( int aPrecision )
{
m_precision = aPrecision;
}
void INCREMENTAL_TEXT_CTRL::SetValue( double aValue )
{
m_currentValue = aValue;
updateTextValue();
}
double INCREMENTAL_TEXT_CTRL::GetValue()
{
// sanitise before handing the value - if the user did something
// like close a window with outstanding text changes, we need
// to clamp the value and re-interpret the text
incrementCtrlBy( 0.0 );
return m_currentValue;
}
SPIN_INCREMENTAL_TEXT_CTRL::SPIN_INCREMENTAL_TEXT_CTRL( wxSpinButton& aSpinBtn,
wxTextCtrl& aTextCtrl ):
m_spinBtn( aSpinBtn ),
m_textCtrl( aTextCtrl )
{
// set always enabled, otherwise it's very hard to keep in sync
aSpinBtn.SetRange( -INT_MAX, INT_MAX );
auto spinUpHandler = [this] ( wxSpinEvent& event )
{
incrementCtrl( true );
};
// spin up/down if a single step of the field
auto spinDownHandler = [this] ( wxSpinEvent& event )
{
incrementCtrl( false );
};
auto mouseWheelHandler = [this] ( wxMouseEvent& aEvent )
{
incrementCtrl( aEvent.GetWheelRotation() >= 0 );
};
aSpinBtn.Bind( wxEVT_SPIN_UP, spinUpHandler );
aSpinBtn.Bind( wxEVT_SPIN_DOWN, spinDownHandler );
m_textCtrl.Bind( wxEVT_MOUSEWHEEL, mouseWheelHandler );
m_textCtrl.Bind( wxEVT_KILL_FOCUS, &SPIN_INCREMENTAL_TEXT_CTRL::onFocusLoss, this );
}
SPIN_INCREMENTAL_TEXT_CTRL::~SPIN_INCREMENTAL_TEXT_CTRL()
{
// this must be unbound, as kill focus can arrive after the
// text control is gone
m_textCtrl.Unbind( wxEVT_KILL_FOCUS, &SPIN_INCREMENTAL_TEXT_CTRL::onFocusLoss, this );
}
void SPIN_INCREMENTAL_TEXT_CTRL::onFocusLoss( wxFocusEvent& aEvent )
{
// re-read the input and sanitize any user changes
incrementCtrlBy( 0.0 );
}
void SPIN_INCREMENTAL_TEXT_CTRL::setTextCtrl( const wxString& val )
{
m_textCtrl.SetValue( val );
}
wxString SPIN_INCREMENTAL_TEXT_CTRL::getCtrlText() const
{
return m_textCtrl.GetValue();
}